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further rocksdb tuning (#1409)

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This commit is contained in:
Nikolay Volf 2016-06-23 19:56:43 +03:00 committed by Gav Wood
parent 1d31cee524
commit 27b18df3dd
1 changed files with 6 additions and 2 deletions
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8
util/src/kvdb.rs
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@ -20,8 +20,10 @@ use std::default::Default;
use rocksdb::{DB, Writable, WriteBatch, IteratorMode, DBVector, DBIterator,
IndexType, Options, DBCompactionStyle, BlockBasedOptions, Direction};
const DB_FILE_SIZE_BASE: u64 = 10 * 1024 * 1024;
const DB_FILE_SIZE_MULTIPLIER: i32 = 5;
const DB_FILE_SIZE_BASE: u64 = 128 * 1024 * 1024;
const DB_FILE_SIZE_MULTIPLIER: i32 = 1;
const DB_BACKGROUND_FLUSHES: i32 = 4;
const DB_BACKGROUND_COMPACTIONS: i32 = 4;
/// Write transaction. Batches a sequence of put/delete operations for efficiency.
pub struct DBTransaction {
@ -116,6 +118,8 @@ impl Database {
opts.set_compaction_style(DBCompactionStyle::DBUniversalCompaction);
opts.set_target_file_size_base(DB_FILE_SIZE_BASE);
opts.set_target_file_size_multiplier(DB_FILE_SIZE_MULTIPLIER);
opts.set_max_background_flushes(DB_BACKGROUND_FLUSHES);
opts.set_max_background_compactions(DB_BACKGROUND_COMPACTIONS);
if let Some(cache_size) = config.cache_size {
// half goes to read cache
opts.set_block_cache_size_mb(cache_size as u64 / 2);